高维矩阵环上的膨胀现象
Expanding phenomena over higher dimensional matrix rings
摘要:
本文研究了高维矩阵环上的扩张现象。更精确地说,我们得到了一个大子集的和积估计,并证明了x+yz,x(y+z)是矩阵环上的适度扩张,和xy + z + t是矩阵环上的强扩张。这些结果推广了Y.D. Karabulut,D. Koh,T.范,C-Y。沈,和第二个上市的作者。
英文摘要:
In this paper, we study the expanding phenomena in the setting of higher dimensional matrix rings. More precisely, we obtain a sum-product estimate for large subsets and show that x+yz, x(y+z) are moderate expanders over the matrix ring, and xy + z + t is strong expander over the matrix rings. These results generalize recent results of Y.D. Karabulut, D. Koh, T. Pham, C-Y. Shen, and the second listed author.
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